Kili and Dick
No, Fili and Kili were not like anyone else and they were definitely not human. Kili would probably laugh if anyone asked him if he were human. He wouldn't take the question as much of an insult as his uncle might.
Kili nodded. "That does not surprise me. He has rarely been beaten at home. It is always a joy to watch him do his thing."
There was much more to Fili, of course, but this was a stranger and Kili didn't feel like getting into trouble for revealing too much.